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Cache management system and method for raid

A technology of cache management and management method, which is applied in the field of computer hard disks and can solve the problems of inability to exchange data in storage blocks.

Active Publication Date: 2011-11-30
SUZHOU ETRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Compared with the lower-level memory, the capacity of the Cache is very small, and it only stores a subset of the content of the lower-level memory. The content exchange between the Cache and the lower-level memory is generally in units of blocks, but in In the existing technology, storage blocks in the Cache cannot be efficiently exchanged with data in the next-level memory

Method used

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] The purpose of the present invention is to provide a cache management system for RAID, which can enable the Cache to conveniently and efficiently exchange data with the next-level storage system.

[0034] figure 1 It is a flowchart of a cache management system for RAID according to an embodiment of the present invention, including: a target module 1, a cache management module 2, a RAID core module 3, an input / output scheduling module 4 and an initiator module 5 connected in sequence ,

[0035] The target module 1 is configured to receive an input and output request from the host 8, encapsulate the input and output request, and send the package to the cache managem...

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Abstract

The invention relates to the technical field of computer hard disks, in particular to a cache management system and method for a RAID (Redundant Array of Independent Disks). The management system comprises a target module (1), a cache management module (2), a RAID nucleus module (3), an input / output scheduling module and a starter module which are sequentially connected. The cache management system not only can conveniently manage storage blocks in a cache, but also facilitates data communication with a next stage, and meanwhile has a good mechanism which can reduce read-write of magnetic discs, thus the efficiency and the performance of a whole system are improved.

Description

technical field [0001] The invention relates to the technical field of computer hard disks, in particular to a cache management system and method for a redundant array of independent disks (Redundant Array of Independent Disk, RAID). Background technique [0002] In recent years, with the rapid development of computer network, especially multimedia technology, its application has expanded and penetrated into various fields of economy, politics, and social life. With the continuous expansion and improvement of its application scope and level, the storage capacity of computer data information , Read and write speed and error correction tolerance capability are also constantly put forward higher requirements. For this requirement, RAID technology provides a good solution, and therefore has gained rapid development and wide application. [0003] RAID high-speed cache (Cache) technology has developed very rapidly in the field of disk storage technology in recent years. As high-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 顾良清顾华林
Owner SUZHOU ETRON TECH CO LTD
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